From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 02 May 2024 17:15:13 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1s2Y9R-00FHFK-0v for lore@lore.pengutronix.de; Thu, 02 May 2024 17:15:13 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1s2Y9P-00034D-5F for lore@pengutronix.de; Thu, 02 May 2024 17:15:13 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=QsWw38237vx7DV5C+jFngGQlTyAfQQnuhQoU7UQotMo=; b=PU88xdPlIwDWbqySNCmjXdtZuM mXorDB0G6ZL2/muEruqQr1T8fJsull5TYdSFAuEU6nmMPt7FGgaxK/nd71YvdNjmccNbPLzYmYGVP yoNjL9SDa/IkauDzn+HJOWr4PJazzc8MDBsPLjjzxImTP2Nkt7FmjZ+5JeeT5828XGoSQyOQNCK8n 1MZ1/OQOIoUSDsyaZxxg6vSvll/89F1+jQZMqUhnPmiZlW7r3PFYKmR513snwSaaZbuaqE9dL7E3Q TI4UVFb97UUwjhYiGPNVLQEjYNAy/TIabsUmxur46SnYSBUtGFKk2i5UOJbAVRYfECT8LdGE9/2pt EugHePrw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2Y8r-0000000D4Oz-1XeC; Thu, 02 May 2024 15:14:37 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2Y8n-0000000D4Nh-3III for barebox@lists.infradead.org; Thu, 02 May 2024 15:14:34 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1s2Y8m-0002qO-Cl; Thu, 02 May 2024 17:14:32 +0200 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1s2Y8m-00FXqQ-0N; Thu, 02 May 2024 17:14:32 +0200 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1s2Y8l-00Gd1F-2y; Thu, 02 May 2024 17:14:31 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Thu, 2 May 2024 17:14:29 +0200 Message-Id: <20240502151430.3963160-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240502_081433_844368_AE2398B4 X-CRM114-Status: GOOD ( 11.61 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 1/2] include: ktime: implement __ktime_divns for 32-bit systems X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) ktime_devns is an inline function for constant divisors. For non-constant divisors, it's only inline for 64-bit systems and calls to an out-of-line __ktime_divns function otherwise. Implement the out-of-line function, so it's use of the function in common code is portable. Signed-off-by: Ahmad Fatoum --- lib/math/div64.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/lib/math/div64.c b/lib/math/div64.c index 386497592b0b..3d646c487b3d 100644 --- a/lib/math/div64.c +++ b/lib/math/div64.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -233,3 +234,32 @@ u64 mul_u64_u64_div_u64(u64 a, u64 b, u64 c) return res + div64_u64(a * b, c); } #endif + +/* + * Functions for the union type storage format of ktime_t which are + * too large for inlining: + */ +#if BITS_PER_LONG < 64 +/* + * Divide a ktime value by a nanosecond value + */ +s64 __ktime_divns(const ktime_t kt, s64 div) +{ + int sft = 0; + s64 dclc; + u64 tmp; + + dclc = ktime_to_ns(kt); + tmp = dclc < 0 ? -dclc : dclc; + + /* Make sure the divisor is less than 2^32: */ + while (div >> 32) { + sft++; + div >>= 1; + } + tmp >>= sft; + do_div(tmp, (u32) div); + return dclc < 0 ? -tmp : tmp; +} +EXPORT_SYMBOL_GPL(__ktime_divns); +#endif /* BITS_PER_LONG >= 64 */ -- 2.39.2